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    SplDoublyLinkedList::offsetExists

    (PHP 5 >= 5.3.0)

    SplDoublyLinkedList::offsetExists — Returns whether the requested $index exists

    說明

    public bool SplDoublyLinkedList::offsetExists ( mixed $index )

    參數

    index

    The index being checked.

    回傳值

    TRUE if the requested index exists, otherwise FALSE

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